mirror of
https://github.com/fabro-sh/fabro.git
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98c26d5370
## Summary
Removes the standalone `agent.context_window.snapshot` event and instead
attaches the context-window projection directly to `agent.message`. This
eliminates the async provider token-count API calls that the old
approach required, and simplifies the event log to a single event type
carrying all post-response agent data.
## What Changed and Why
**Before:** After each LLM turn, the agent emitted a separate
`agent.context_window.snapshot` event — first a local estimate, then
potentially a second one after an async `count_input_tokens` call
resolved (or after response usage arrived). This required fingerprint
deduplication state, a `close_token` to cancel in-flight counts, and
frontend handling for the extra event type.
**After:** The `AgentEvent::AssistantMessage` variant carries an
`Option<StageContextWindowProjection>`. The projection is computed
locally at request-build time and then refined using response token
usage when available (`ResponseUsageScaledBreakdown`), or kept as a
`LocalEstimate` when response usage is absent. No provider API calls are
made.
### Plan Summary
- **Task 1:** Added `context_window:
Option<StageContextWindowProjection>` to `AgentMessageProps` (Rust types
+ OpenAPI), removed `AgentContextWindowSnapshotProps` and
`EventBody::AgentContextWindowSnapshot`.
- **Task 2:** Removed the spawned `count_input_tokens` task,
`close_token`, fingerprint sets, and both snapshot-emit methods from
`Session`. Added `context_window_from_response_usage` to
`context_window.rs`; `BuiltRequest` now holds the local projection
instead of the tool list.
- **Task 3:** Workflow conversion copies `context_window` from
`AgentEvent::AssistantMessage` into `AgentMessageProps`; store reducer
reads it from `AgentMessage` instead of the removed snapshot variant and
stamps `event_seq`.
- **Task 4:** GET endpoint tests updated to seed data via
`agent.message` with embedded context-window; endpoint behavior
unchanged.
- **Task 5:** Frontend constant and tests for
`agent.context_window.snapshot` removed; `agent.message` already
invalidates `stageContextWindow` through existing stage-activity
handling. TypeScript client regenerated with the new `AgentMessageProps`
model.
### Key Design Decisions
- **No provider token-count API calls** during normal execution —
context-window accuracy relies on local estimates scaled by response
usage, which is always available for successful turns.
- **Failed-before-response turns** emit no context-window data
(`context_window: None`), matching the old behavior where a snapshot
would have been emitted but response-usage scaling would never arrive.
- `BuiltRequest` drops the `tools` field (only needed for the
now-removed snapshot emission path); the local projection is computed at
build time and stored directly.
### Fabro Details
<details>
<summary>Ran 8 stages in 60m 3s for $55.78</summary>
| Stage | Duration | Cost | Retries |
|---|---|---|---|
| start | 0s | – | 0 |
| toolchain | 1s | – | 0 |
| preflight_compile | 2m 1s | – | 0 |
| preflight_lint | 2m 16s | – | 0 |
| implement | 30m 39s | $44.82 | 0 |
| simplify_opus | 10m 48s | $4.03 | 0 |
| simplify_gpt | 5m 1s | $6.93 | 0 |
| verify | 8m 47s | – | 0 |
| **Total** | **60m 3s** | **$55.78** | **0** |
</details>
<details>
<summary>Ran <code>ImplementPlan.fabro</code> (11 nodes and 14
edges)</summary>
```dot
digraph ImplementPlan {
graph [
goal="Implement and simplify",
model_stylesheet="
* { model: claude-opus-4-7; }
"
]
rankdir=LR
start [shape=Mdiamond, label="Start"]
exit [shape=Msquare, label="Exit"]
toolchain [label="Toolchain", shape=parallelogram, script="command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1", max_retries=0]
preflight_compile [label="Preflight Compile", shape=parallelogram, script="cargo check -q --workspace 2>&1", max_retries=0]
preflight_lint [label="Preflight Lint", shape=parallelogram, script="cargo +nightly-2026-04-14 clippy -q --workspace --all-targets -- -D warnings 2>&1", max_retries=0]
fix_lints [label="Fix Lints", prompt="The preflight lint step failed. Read the build output from context and fix all clippy lint warnings.", max_visits=3]
implement [label="Implement", prompt="Read the plan file referenced in the goal and implement every step. Make all the code changes described in the plan. Use red/green TDD.", model="gpt-55", reasoning_effort="xhigh"]
simplify_opus [label="Simplify (Opus)", prompt="@prompts/simplify.md"]
simplify_gpt [label="Simplify (GPT-55)", prompt="@prompts/simplify.md", model="gpt-55"]
verify [label="Verify", shape=parallelogram, script="git fetch origin main 2>&1 && git merge --no-edit --no-stat origin/main 2>&1 && cargo +nightly-2026-04-14 fmt --all 2>&1 && cargo dev docs refresh 2>&1 && cargo +nightly-2026-04-14 fmt --check --all 2>&1 && { command -v rg >/dev/null 2>&1 || { echo 'rg is required for verify'; exit 127; }; } && ! rg -n 'AuthMode::Disabled|RunAuthMethod|RunSubjectProvenance|\bActorRef\b|\bActorKind\b|AuthenticatedSubject|AuthenticatedService|AuthorizeRunScoped|AuthorizeRunBlob|AuthorizeStageArtifact|AuthorizeCommandLog|auth_method\s*==\s*\"disabled\"' lib/crates apps lib/packages docs/public/api-reference/fabro-api.yaml 2>&1 && cargo +nightly-2026-04-14 clippy --workspace --all-targets -- -D warnings 2>&1 && cargo nextest run --workspace --status-level slow --profile ci 2>&1 && cargo dev docs check 2>&1 && bun install --frozen-lockfile 2>&1 && (cd apps/fabro-web && bun run typecheck) 2>&1 && (cd apps/fabro-web && bun run test) 2>&1 && (cd lib/packages/fabro-api-client && bun run typecheck) 2>&1 && cargo dev build -- -p fabro-cli --release 2>&1", goal_gate=true, retry_target="fixup"]
fixup [label="Fixup", prompt="The verify step failed. Read the build output from context and fix all format, clippy, Rust test, docs, TypeScript typecheck/test, and build failures.", max_visits=3]
start -> toolchain
toolchain -> preflight_compile [condition="outcome=succeeded"]
toolchain -> exit
preflight_compile -> preflight_lint [condition="outcome=succeeded"]
preflight_compile -> exit
preflight_lint -> implement [condition="outcome=succeeded"]
preflight_lint -> fix_lints
fix_lints -> preflight_lint
implement -> simplify_opus -> simplify_gpt -> verify
verify -> exit [condition="outcome=succeeded"]
verify -> fixup
fixup -> verify
}
```
</details>
⚒️ Generated with [Fabro](https://fabro.sh)
---------
Co-authored-by: Fabro <noreply@fabro.sh>
Co-authored-by: Bryan Helmkamp <bryan@brynary.com>
17 lines
671 B
JSON
17 lines
671 B
JSON
{
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"name": "@qltysh/fabro-api-client",
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"version": "0.1.0",
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"private": true,
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"type": "module",
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"scripts": {
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"generate": "bunx @openapitools/openapi-generator-cli@2.20.2 generate -i ../../../docs/public/api-reference/fabro-api.yaml -g typescript-axios --additional-properties=supportsES6=true,typescriptThreePlus=true,withSeparateModelsAndApi=true,apiPackage=api,modelPackage=models,useTags=true,enumPropertyNaming=UPPERCASE -o src && bun run scripts/normalize-generated.ts",
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"typecheck": "tsc"
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},
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"devDependencies": {
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"@openapitools/openapi-generator-cli": "2.20.2",
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"typescript": "^5.9.2"
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},
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"dependencies": {
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"axios": "^1.7.0"
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}
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}
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